brunoage



J. W. BRUNDAGE.

APPARATUS FOR REMOVING FLEXIBLE ARTICLES FROM THEIR FORMS 0R CORES.

AL'L/LICATION mu) 11min, I920.

1,365,764. Patented Jan. 18, 1921.

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APPARATUS FOR REMOVING FLEXIBLE ARTICLES FROM THEIR FORMS OR CORES.

APPLICATION mu) JUNE 24.1920. 1,365,764. Patented Jan. 18, 1921.

3 SHtL1SSHEEI 2 8m uanfoz J. W. BRUNDAGE. APPARATUS FOR REMOVING FLEXIBLE ARTICLES FROM THEIR FORMS 0R CORES.

APPHCATION FILED JUNE 24. I920.

L 2. 9 1... H 8" l mu JM 8 M n m P 5] ucwtoz UNITED STATES PATENT OFFICE.

JAMES W. BRUNDAGE, OF AKRON, OHIO, ASSIGNOR TO THE MILLER RUBBER COM- PANY, OF AKRON, OHIO, A CORPORATION OF OHIO.

APPARATUS FOR REMOVING FLEXIBLE ARTICLES FROM THEIR FORMS OB CODES.

Application filed June 24, 1920.

To all whom it may concern:

Be it known that I, JAMES W. BRUNpAeE, a citizen of the United States, and resident of Akron, in the county of Summit and State of Ohio, have invented certain new and useful Improvements in Apparatus for Removing Flexible Articles from The r Forms or Cores, of which the following is a s eciflcation.

i y present invention relates to improvements in apparatus designed for facilitat ng the stripping of hollow bodies of expansible material (such for example, as rubber toy balloons) from the forms or cores upon which they are made.

The invention aims to provide a simple and eflicient form of apparatus for carrying out the process disclosed in Letters Patent of the United States, No. 1,330,595, dated February 10, 1920, which may be conveniently and expeditiously manipulated by the operator and in which means are provided to prevent the waste of the air under pressure which is used to eflect or assist the stripping.

The invention further aims to provide means for mingling with the air a powdered material to be conveyed thereby into the interior of the hollow article being strlpped or removed so as to prevent the wallsof such article, after removal, from sticking to ether.

he invention also aims to provide means for preventing any waste of the powdered material being used.

With these and other objects in View, the invention includes the novel features of construction and arrangement and combination of parts hereinafter described and particularly defined by the appended claims.

An embodiment of the said invention s illustrated in the accompanying drawings in which:

Figure 1 is a front elevation of an installation of my improved apparatus, the illustration being largely diag ammatic.

Fig. 2 is a front elevation on a larger scale of one unit of the apparatus shown in Fi 1.

Fig. 3 is a view at right angles to Fig. 2; and

Specification of Letters Patent.

Patented Jan. 18, 1921.

Serial No. 391,370.

Fig. 4 is a detail view in elevation, on a still larger scale, of the form carrying and air controlling mechanism.

Fig. 5 is a detail of the baffle plate.

Referring by reference characters, the numerals 1, 1, etc., designate a series of tables, of which there may be one or any desired number, each table being provided preferably with two sets of stripping apparatus, arranged so as to allow two operators to stand upon opposite sides of the table, but this arrangement is a matter of convenience.

Mounted on the table at a suitable distance from the edge on each side thereof is a pedestal or bracket member 2 having a base 2 designed to be bolted or otherwise suitably secured to the table top. This pedestal or bracket has a forked upper end 2", between the arms of which is pivoted upon a pivot pin 3, a rocking or jaw member 4 having a transversely disposed recess 4 designed to receive the flanged base 5 of the form or core 5, the front wall 4" of the recess being provided with an open slot to receive the shank of the form adjacent the flanged base. A nozzle for directing a jet of air between the edge of the article and the form. in the manner and for the purpose described in detail in the Letters Patent aforesaid, is secured to the side of said rocking or jaw member 4 so as to be longitudinally adjust able, being clamped in its adjusted position by a thumb screw 7. This nozzle is connected by a flexible pipe, preferably a coil of rubber hose, indicated at 8, with an air supply pipe 9 to which air may be delivered from any suitable source but preferably in the manner hereinafter described. The air supply pipe is preferably supplied with a shutoff cock 10 to be closed when the apparatus is not in use to guard against any possible leakage, it being understood that this valve is open when the apparatus is being used.

As the stripping of the balloon or other article from its form requires but a brief space of time, I provide means, for automatically cutting ofl the air supply as soon as the article has been stripped off or removed.

This preferably takes the form shown in detail in Fig. 4 in which is provided a pinch valve 12 designed to compress the tube to shut off the air, this pinch valve being carried by one arm of a bell crank lever 12, the other arm of which is acted upon by a spring 13 tending to normally hold the valve closed, one end of the spring being connected to the bell crank lever and the other end to an extension 6 of the bracket portion 2 The bell crank is connected by a link 11 with the arm 41 of member 4 so that the action of the spring in closing the valve also swings the member 4- on its axis, and raises the jaw. When a form bearing a balloon or other article has been positioned in the jaw member 4 and is to be stripped from the form, the depression of the jaw member opens the valve and allows a jet of compressed air to be ejected from the nozzle to enable the stripping to be expeditiously performed, and as soon as the article has been removed the release of the jaw member causes the valve to be instantly automatically closed.

As the articles carried by the forms are of freshly vulcanized rubber, the inner wall surfaces thereof would, upon collapse of the stripped article, sometimes tend to stick together. To prevent this, I use the air jet as a means for injecting into the interior of the articles during the stripping, powdered soapstone or similar material in clustlike form which coats the interior of the articles sufliciently to prevent such objectionable sticking.

To this end I rovide in connection with each table, and preferably beneath the same, a tank 14 designed to contain such powdered material. An air supply pipe 15" from a main pipe line 15 leads into the bottom of the tank, which is preferably of inverted cone shape, and serves to agitate the powdered material therein. The tank is provided with a cover 1 1' having a filling manhole or opening 14*, and a dome 14 to which the pipe 9 is connected.

Means are provided in the shape of baille or bafiles 14: to prevent the passage of lumps or slugs of material into the air pipe.

Naturally some powdered material will be disseminated in the vicinity of the nozzle and to prevent the waste of this I provide a collection means in the shape of a main exhaust line 16 having branches terminating in hoods 16 located in close proximity to and above the air jets or nozzles, and other branches provided with hoods or mouths 16 extending through the table and lying beneath the forms to catch any powdered material dropping downward.

Suction may be maintained in the main suction line and any disseminated powdered material will be drawn into the line and may be separated from the air by any suitable means and re-used.

It is necessary that the air should be perfectly dry otherwise the powdered material will be moistened and its action obstructed. To this end I provide the air supply pipe with moisture removing means, such, for example, as a condenser, tank, and trap conventionally shown in Fig. 1, and correspondingly designated.

Having thus described my invention, what I claim is:

1. In combination, a holder for a form bearing an article to be stripped, a nozzle for directing a jet of fluid between the edge of the article and its form, and means for commingling powdered material with said fluid prior to its discharge into the form.

2. In combination, a holder for a form bearing an article to be stripped, a nozzle for directing a jet of fluid between the edge of the article and its form, and means for com mingling powdered material with said fluid prior to its discharge into the form, and means adjacent said nozzle for collecting any disseminated powdered material.

3. In combination, a holder for a form bearing an article to be stripped, said holder being movably mounted upon a fixed support, a nozzle carried by said holder con-' nected with a source of fluid under pressure, and means whereby the movement of said holder on its support controls the passage of fluid to said nozzle.

4. In combination, a holder for a form bearing an article to be stripped therefrom, said holder being movably mounted on a fixed support, a fluid nozzle carried by said support, a rubber tube connected with said nozzle and with a source of fluid under pressure, a pinch member for compressing a portion of said tube to cut oflf the flow of fluid, and means whereby the movement of said holder operates said pinch member.

5. In combination, a rocking member for detachably holding a form bearing an article to be stripped therefrom, a fluid nozzle carried by said holder, a source of fluid under pressure connected with said nozzle by a flexible pipe connection, spring means for rocking said holder in one direction, and means whereby the movement of said rocking member controls the flow of fluid to the nozzle.

6. In combination, a holder for a form bearing an article to be stripped, a nozzle carried by said holder for directing a jet of air between the edge of the article and its form, a closed container for powdered material, means for supplying fluid under pres sure to said closed container, and a pipe connection from said container to said nozzle.

7. In combination, a holder for a form bearing an article to be stripped, a nozzle carried by said holder for directing a jet of air between the edgeof the article and its form, a closed container for powdered material, a pipe connection for supplying fluid under pressure to the bottom of said container, and a pipe connection from the upper portion of said container to said nozzle.

8. In apparatus of the character described, a movable holder, a fluid jet nozzle associated therewith, a closed container for powdered material having a contracted lower part and a dome at the top, means for supplying fluid under pressure to said contracted lower part, and a pipe connection from said dome to said nozzle.

9. In apparatus of the character described, a supporting member, a forked member pivotally mounted thereon, a nozzle carried by said forked member, a flexible pipe connection for supplying fluid under pressure to said nozzle, a valve for controlling the flow of fluid through said pipe connection, and an arm on said forked member arranged to actuate said valve.

10. In apparatus of the character described, a supporting member, a forked member pivotally mounted thereon, a nozzle carried by said forked member, a rubber tube connection for supplying fluid under pressure to said nozzle, a rocking lever having a pinch member for compressing a portion of said tube, an arm on said forked member having a link connection with said rocking lever, and spring means for normally holding said pinch member in tube compressing position.

11. In apparatus of the class described, a form holder, a nozzle adjacent thereto, means for supplying fluid under pressure carryin a powdered material to said nozzle, an suction collector means for surplus powdered material arranged above and below said holder.

12. In apparatus of the character described, a form carrying holder, a fluid jet nozzle associated therewith, a closed container for powdered material having a pipe connection to said nozzle, a source of air under pressure connected with the container to commingle powdered material with said air, and means interposed between said source of air and said container for removing moisture from the air.

In testimony whereof, I affix my signature.

JAMES W. BRUNDAGE. 

